A 65-year-old Russian adventurer was battling sleep deprivation, freezing temperatures and ice in his oxygen mask but was ahead of schedule for his record attempt to fly solo in a balloon around the world nonstop, his son ...

The term "space fog" refers not to water droplets blocking the view in space - there's no water out there - but rather a phenomenon affecting the mental abilities of astronauts. Those who have spent time aboard the International ...

Whether you're a human, a mouse, or even a fruitfly, losing sleep is a bad thing, leading to physiological effects and behavioral changes. One example that has been studied for many years is a link between sleep loss and ...

Blame smartphone alerts, constant connectivity and a deluge of media for our society's sleep deprivation. But the root cause of why we get less sleep now than our ancestors did could come down to a much simpler reason: artificial ...

(Phys.org)—Ideally, we would get the appropriate amount of sleep to keep our bodies healthy, but in our modern society things like jet lag, extended work hours, or using electronic devices cause disruptions in our sleep/wake ...

It happens to everyone: You stay up late one night to finish an assignment, and the next day, you're exhausted. Humans aren't unique in that; all animals need sleep, and if they don't get it, they must make it up.

Sleep deprivation

Sleep deprivation, having too little sleep, can be either chronic or acute. Long-term sleep deprivation causes death in lab animals. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight gain.

Complete absence of sleep over long periods is impossible to achieve; brief microsleeps cannot be avoided.